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/*
* Copyright (c) 2012, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.javafx.tk.quantum;
import javafx.application.Platform;
import javafx.scene.input.TransferMode;
import com.sun.glass.ui.ClipboardAssistance;
import com.sun.glass.ui.View;
import com.sun.glass.ui.Window;
import java.security.AccessController;
import java.security.PrivilegedAction;
class GlassSceneDnDEventHandler {
private final GlassScene scene;
public GlassSceneDnDEventHandler(final GlassScene scene) {
this.scene = scene;
}
// Drop target handlers
private double getPlatformScaleX() {
View view = scene.getPlatformView();
if (view != null) {
Window w = view.getWindow();
if (w != null) {
return w.getPlatformScaleX();
}
}
return 1.0;
}
private double getPlatformScaleY() {
View view = scene.getPlatformView();
if (view != null) {
Window w = view.getWindow();
if (w != null) {
return w.getPlatformScaleY();
}
}
return 1.0;
}
@SuppressWarnings("removal")
public TransferMode handleDragEnter(final int x, final int y, final int xAbs, final int yAbs,
final TransferMode recommendedTransferMode,
final ClipboardAssistance dropTargetAssistant)
{
assert Platform.isFxApplicationThread();
return AccessController.doPrivileged((PrivilegedAction) () -> {
if (scene.dropTargetListener != null) {
double pScaleX = getPlatformScaleX();
double pScaleY = getPlatformScaleY();
QuantumClipboard dragboard =
QuantumClipboard.getDragboardInstance(dropTargetAssistant, false);
return scene.dropTargetListener.dragEnter(x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY,
recommendedTransferMode, dragboard);
}
return null;
}, scene.getAccessControlContext());
}
@SuppressWarnings("removal")
public void handleDragLeave(final ClipboardAssistance dropTargetAssistant) {
assert Platform.isFxApplicationThread();
AccessController.doPrivileged((PrivilegedAction) () -> {
if (scene.dropTargetListener != null) {
scene.dropTargetListener.dragExit(0, 0, 0, 0);
}
return null;
}, scene.getAccessControlContext());
}
@SuppressWarnings("removal")
public TransferMode handleDragDrop(final int x, final int y, final int xAbs, final int yAbs,
final TransferMode recommendedTransferMode,
final ClipboardAssistance dropTargetAssistant)
{
assert Platform.isFxApplicationThread();
return AccessController.doPrivileged((PrivilegedAction) () -> {
if (scene.dropTargetListener != null) {
double pScaleX = getPlatformScaleX();
double pScaleY = getPlatformScaleY();
return scene.dropTargetListener.drop(x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY,
recommendedTransferMode);
}
return null;
}, scene.getAccessControlContext());
}
@SuppressWarnings("removal")
public TransferMode handleDragOver(final int x, final int y, final int xAbs, final int yAbs,
final TransferMode recommendedTransferMode,
final ClipboardAssistance dropTargetAssistant)
{
assert Platform.isFxApplicationThread();
return AccessController.doPrivileged((PrivilegedAction) () -> {
if (scene.dropTargetListener != null) {
double pScaleX = getPlatformScaleX();
double pScaleY = getPlatformScaleY();
return scene.dropTargetListener.dragOver(x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY,
recommendedTransferMode);
}
return null;
}, scene.getAccessControlContext());
}
// Drag source handlers
// This is a callback from the native platform, when a drag gesture is
// detected. This mechanism is currently not used in FX, as we have
// a custom gesture recognizer in Scene, and DnD is started with
// Toolkit.startDrag().
@SuppressWarnings("removal")
public void handleDragStart(final int button, final int x, final int y, final int xAbs, final int yAbs,
final ClipboardAssistance dragSourceAssistant)
{
assert Platform.isFxApplicationThread();
AccessController.doPrivileged((PrivilegedAction) () -> {
if (scene.dragGestureListener != null) {
double pScaleX = getPlatformScaleX();
double pScaleY = getPlatformScaleY();
QuantumClipboard dragboard =
QuantumClipboard.getDragboardInstance(dragSourceAssistant, true);
scene.dragGestureListener.dragGestureRecognized(
x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY, button, dragboard);
}
return null;
}, scene.getAccessControlContext());
}
// This is a callback from the native platform, when the drag was started
// from handleDragStart() above, or when FX as a drag source is embedded
// to Swing/SWT.
@SuppressWarnings("removal")
public void handleDragEnd(final TransferMode performedTransferMode,
final ClipboardAssistance dragSourceAssistant)
{
assert Platform.isFxApplicationThread();
AccessController.doPrivileged((PrivilegedAction) () -> {
try {
if (scene.dragSourceListener != null) {
scene.dragSourceListener.dragDropEnd(0, 0, 0, 0, performedTransferMode);
}
} finally {
QuantumClipboard.releaseCurrentDragboard();
}
return null;
}, scene.getAccessControlContext());
}
}
